devlink: fix net namespace reference leak in reload (CVE-2026-74718) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-74718

devlink: fix net namespace reference leak in reload

Answer in brief

CVE-2026-74718 records a Unknown severity vulnerability in devlink: fix net namespace reference leak in reload. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 22, 2026Updated Aug 22, 2026Source checked Aug 22, 2026First seen by HOL Aug 22, 2026Material review Aug 22, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=2edd92570441dd33246210042dc167319a5cf7e3 <7b6552e53426ea0539c667bbc5a524fdf7feae6f \|\| >=2edd92570441dd33246210042dc167319a5cf7e3 <bf0797b92be591ac71d7c0f610e695caca3c72c9 \|\| >=2edd92570441dd33246210042dc167319a5cf7e3 <7b02c6d2a3cd2cd669f5c16685779f84328ae60c \|\| >=2edd92570441dd33246210042dc167319a5cf7e3 <eda60c85b4f4c7d66b7141a5fe020b1a7f395341 \|\| >=2edd92570441dd33246210042dc167319a5cf7e3 <1c4dac9bf1d2ac31da63b794bdec697777cbd0fd	7b6552e53426ea0539c667bbc5a524fdf7feae6f, bf0797b92be591ac71d7c0f610e695caca3c72c9, 7b02c6d2a3cd2cd669f5c16685779f84328ae60c, eda60c85b4f4c7d66b7141a5fe020b1a7f395341, 1c4dac9bf1d2ac31da63b794bdec697777cbd0fd
Linux/Linuxgeneric	6.3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7b6552e53426ea0539c667bbc5a524fdf7feae6f if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 22, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: devlink: fix net namespace reference leak in reload devlink_nl_reload_doit() calls devlink_netns_get(), which returns a net with a held reference. When the requested namespace differs from the current one and the reload action is not DRIVER_REINIT, the function returns -EOPNOTSUPP without releasing the reference. Add the missing put_net() on this error path.

Quoted source text, attributed separately from HOL analysis.